18225456 has 40 divisors (see below), whose sum is σ = 48709680. Its totient is φ = 5865216.

The previous prime is 18225439. The next prime is 18225469. The reversal of 18225456 is 65452281.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5155 + ... + 7938.

It is an arithmetic number, because the mean of its divisors is an integer number (1217742).

Almost surely, 2^18225456 is an apocalyptic number.

18225456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18225456 is an abundant number, since it is smaller than the sum of its proper divisors (30484224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18225456 is a wasteful number, since it uses less digits than its factorization.

18225456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13133 (or 13127 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 18225456 is about 4269.1282482493. The cubic root of 18225456 is about 263.1637912391.

It can be divided in two parts, 18225 and 456, that added together give a palindrome (18681).

The spelling of 18225456 in words is "eighteen million, two hundred twenty-five thousand, four hundred fifty-six".